It's a song as old as rhyme, as Mrs. Potts would say: new AMD and Intel chips are out, and there are new desktops to take advantage of them. HP's playing its part with three new budget-friendly Pavilion desktop series: the p6700 (starting at $300), s5700 ($330), and HPE-500 ($600). They all offer a wide range of configurations, with the standard-sized p6700 starting out at a Pentium E5700 proc and ranging up to an Athlon II 445 triple-core processor, the slim s5700 ranging from Athlon II 260 dual-core up to Phenom II 511 dua